ROTPAT

ROTPAT causes SCHED to expand pointing patterns to include
a raster in focus and rotation. The position offsets in this
raster are specified by FOCOFF and
ROTOFF. ROTPAT is only expected
to be used by VLBA testers.

ROTPAT have a value which is the number of positions in
focus/rotation in the pattern. It can only be used for 13cm, 6cm,
4cm, 2cm, 1cm, 7mm, and 3mm. Note that the overall scan must be ptslew plus rotpat times ( 2 times ptdur plus N times 10
times ptdur ) long to fit a full pattern with N pointing loops
at each focus/rotation position.

A typical set of offsets would be ROTOFF=-1.5, 0, 0, 0, 1.5
and FOCOFF=0, -1, 0, 1, 0 with FOCPAT=5.